// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_ANIMATION_INK_DROP_DELEGATE_H_
#define UI_VIEWS_ANIMATION_INK_DROP_DELEGATE_H_

#include "base/macros.h"
#include "ui/views/animation/ink_drop_state.h"
#include "ui/views/views_export.h"

namespace ui {
class GestureEvent;
class Event;
} // namespace ui

namespace views {

// Ink ripple animation delegate that starts and stops animations based on
// View states and events.
class VIEWS_EXPORT InkDropDelegate {
public:
    InkDropDelegate() { }
    virtual ~InkDropDelegate() { }

    // Sets sizes for the animation layers that are squares with |large_size| and
    // |small_size| being the length of each side. When painting rounded squares
    // |large_corner_radius| and |small_corner_radius| are specifying the
    // corner radius.
    virtual void SetInkDropSize(int large_size,
        int large_corner_radius,
        int small_size,
        int small_corner_radius)
        = 0;

    // Called when the bounds or layout of the View changes necessitating change
    // in positioning of ink ripple layers.
    virtual void OnLayout() = 0;

    // Called when ink ripple state changes.
    // TODO(bruthig): Replace the InkDropState parameter with an InkDropAction
    // enum.  The InkDropAction enum should be a subset of the InkDropState values
    // as well as a NONE value.
    virtual void OnAction(InkDropState state) = 0;

    // Enables or disables the hover state.
    virtual void SetHovered(bool is_hovered) = 0;

private:
    DISALLOW_COPY_AND_ASSIGN(InkDropDelegate);
};

} // namespace views

#endif // UI_VIEWS_ANIMATION_INK_DROP_DELEGATE_H_
